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73 Magazine (Amateur Radio Today)

73 Magazine (also known as 73 Amateur Radio Today) (OCLC 22239204) was a United States-based amateur radio magazine that was published from 1960 to 2003. It was known for its strong emphasis on technical articles and for the lengthy editorials in each issue by its founder and publisher, Wayne Green. The magazine title, 73, means "best regards" in amateur radio lingo. Green, a former editor of CQ Amateur Radio magazine, published the first issue of 73 in October 1960.



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73 Magazine (Amateur Radio Today)
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73 Magazine February 1973 (#149) PC-IC-ID - For FM- RTTY- /M- etc ...... K2OAW 27 The Evolution of Spectrum Management - Radio Club of America Talk ...... W4BW 31 Phased Lock Loop Decoder - For continuous tone systems ...... WB6BIH 36 Toroidal Quadreture Antenna - New wideband antenna ...... W4KAE 40 Active Filter Applications - RTTY ...... W1SNN 45 Frequency Measuring System -II - Design theory and clock ...... K5DUS 49 Repeater Keying Line Control - Squelch tail and time-out ...... WB6BIH 60...
Topics: frequency, output, circuit, mhz, input, power, transistor, voltage, repeater, meter, power supply,...
73 Magazine (Amateur Radio Today)
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73 Magazine September 1993 (#396) Computer Control for Beam Antennas, Part II - Give your station a smart, new twist ...... K4OND 10 The W2EKY "Icky-Stick" Antenna - Hit the roof with an improved ground-plane vertical ...... W2EKY 18 Compressing the W3EDP - Build this unique multiband restricted space antenna ...... G2BZQ 20 Distributed Capacity Twisted Loop - An indoor 40 meter antenna for five bucks ...... WA6QBU 26 Evolution of an Antenna - Build a new version of the classic...
Topics: radio, antenna, amateur, mhz, ham, repeater, frequency, amateur radio, radio today, ham radio,...
73 Magazine (Amateur Radio Today)
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73 Magazine May 1998 (#452) An RF sensing Alarm - Save your power amplifier stages ...and your reputation ...... VF2ZAZ 10 A Pleasant Visit to the DDS - Direct Digtal Synthesis is the latest technology in signal generation ...... W6WTU 15 Sensitivity Training - Some pros and cons of increasing receiver sensitivity ...... W2GOM/7 19 Joy's "Loud Enough" Metronome, Part 2 - Mr. Gizmo puts it all together ...... W1RXV 25 The Taylor Vee 20m Antenna - "Anything you don't understand...
Topics: radio, amateur, antenna, frequency, thai, mhz, output, ihe, circuit, signal, amateur radio, radio...
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73 Magazine December 1991 (#375) The Simple TX TX - The perfect companion for the SupeRX receiver! ...... WA6IVC 10 Project INSPIRE: A Space Shuttle Experiment - Build a simple receiver to explore the wonders of the 60,000 meter band! ...... KG6EK 22 The QUAG-V - A high performance and wide bandwidth antenna for VHF and UHF ...... WB3AYW 36 Computerized Tuning for Ramsey Receiver Kits - It doesn't have to be expensive ...... N8KDD 42 Not Just Another Island - Weekend DXpedition activates the...
Topics: amateur, radio, mhz, antenna, frequency, ham, repeater, receiver, amateur radio, radio today, power...
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73 Magazine January 1993 (#388) The Techno-Whizzy 1, Part II - Build a direct digital synthesis (DDS) transmitter ...... N9JZW 10 Programmable-Frequency Audio Generator - High accuracy with digital control ...... Redman 16 The SP-1 Transceiver - Build the HF "Spider" ...... WA8TXT 24 Twin Crystal Ladder Filters - Upper or lower sideband filters using inexpensive crystals ...... N2DCH 32 Handi-Beacon - Turn your tape recorder into a beacon controller ...... WB9YBM 38 The Down East...
Topics: radio, amateur, mhz, antenna, output, power, frequency, repeater, digital, amateur radio, radio...
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73 Magazine April 1967 (#79) The Super Duper Super - It may not be a super, but it's sure super duper ...... WN1ECCH 6 A Toroidal VFO - An excellent VFO with many interesting mechanical features ...... W4BRS 10 Transceiver CW Filter and Monitor - Improve your transceiver's CW capability ...... WlDCG 14 Dreadful Ham Cliches - Special for April ...... K3SUK 16 The Converter Converter - Stick it between your UHF converter and your low-frequency receiver ...... W1OOP 18 The Ratnick Two'er - It's a...
Topics: khz, antenna, watts, power, ssb, circuit, ham, meter, receiver, amateur, power supply, watts pep,...
73 Magazine (Amateur Radio Today)
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73 Magazine February 2003 (#507) Cheap & Easy Portable HF Vertical - Try this medium-weight, sturdy, neat, visually pleasing, fun to use ...... K8MKB 10 Troubleshooting Computer Power Supplies - Rule # 1: Be careful ...... W6WTU 14 Build This Simple SMT Station - Dinner and a movie? How about pizza and a project? ...... AA2JZ 23 How's That Thing Really Work, Anyway? - Part 1: Receivers ...... AA2JZ 25 Warblemania - and other QRP afflictions ...... NY9D 27 Breakdown in Cape Town - The...
Topics: radio, amateur, antenna, power, mhz, voltage, frequency, laser, amateur radio, radio today, power...
73 Magazine (Amateur Radio Today)
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73 Magazine May 1994 (#404) HI-PER Audio Filter - This project provides High-PERformance CW filtering ...... KC3ZQ 10 Speech Compression - Make a monster mike! ...... KB1UM 16 Fast Charger - Recharge NiCd and NiMH batteries in as little as 30 minutes ...... KN6PK 22 The Radar Gun Reality - Ham scientist testifies on electromagnetic radiation ...... K6UI 30 Improved QRP Keying Circuit - A slick fix for your little CW rig ...... KD1JV 58 The ICOM IC-2iA Micro HT - Meet the evershrinking HT .........
Topics: radio, mhz, amateur, antenna, power, ihe, ham, repeater, tor, amateur radio, radio today, ham...
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73 Magazine September 1990 (#360) Quick and Easy Field-Strength Meter - Home-brewing can be simple! ...... KM4KT 9 75 Meter 1/4-Wave Sloper Array - Confessions of a contester ...... WA3EKL 18 Alinco Service Survey - Alinco may be the best show in town ...... WB6NOA 20 Dummy loads for DC Supplies - Don't risk your rig! ...... VE1GM 22 Mobile Power Source Organizer - Easy 12 volt hookups for your mobile gear ...... AH2AR/8 24 End-Fed Copper Dipole - Why buy when you can build? ...... N8KDD 26...
Topics: radio, amateur, antenna, mhz, frequency, ham, power, amateur radio, feedback card, power supply,...
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73 Magazine December 1976 (#194) Go Tone for Ten - simple subaudible encoder ...... WB6GON 22 World's Simplest Five-Band Receiver? - using an AM transistor radio ...... K3QKO 28 How Do You Use ICs? - part IV ...... WA2SUT/NNN0ZVB 36 Hamming 101 - another Cabrillo College pioneering program ...... Inman 40 A Super Cheapo CW IDer - for FM repeaters and RTTY ...... K4EEU 46 The ZF Special Antenna - double-D "beam" ...... ZF1MA 51 CT7001 Clockbuster - the ultimate clock / calendar (for...
Topics: mhz, frequency, power, radio, amateur, antenna, output, kit, meter, circuit, amateur radio, power...
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73 Magazine May 1982 (#260) Pacific Odyssey - the Kingman/Palmyra adventure ...... KB7NW 12 Top-Notch for Top Band - super antennas for 160 ...... N3BEK 26 The Fun-Amp - 20 Watts out ...... WA0RBR 32 The CCD Antenna Revisited - does it measure up on 40m? ...... W4ANL 40 Antenna-Raising: The Good-Neighbor Policy - sidestepping civil war ...... AK5Q/4 42 'Lite Receiver IV - part I: building it is a breeze ...... WA40SR, WA4CVP 48 TVRO Sound Decoders - Satellite Central, part VI ...... Gibson 58...
( 2 reviews )
Topics: antenna, amateur, mhz, radio, magazine, tor, power, frequency, pth, amateur radio, power supply,...
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73 Magazine November 1980 (#242) VSWR... Automatically! - simplify antenna matching with this tune-up aid ...... WB0GWP 42 Welcome Back, Barry! - the Scottsdale RC's most famous member ...... K7NZA 52 Return to Shangri-la - a visit with 9N1MM ...... W1QMS 58 Direct Conversion lives! - excitingly simple receiver project ...... ZS6UP 64 Hams vs. Hurricane Allen - 73 aids St. Lucia relief efforts ...... N8RK 70 Tune In the Wind - a do-it-yourself hot-wire anemometer ...... VE7DKR 80 Direct...
Topics: mhz, antenna, frequency, power, magazine, amateur, radio, model, meter, amateur radio, power...
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73 Magazine September 1991 (#372) The Square Pancake Antenna - A 20-inch square marvel! ...... W2SMR 18 Indoor 10 Meter Beam - A 2-element "invisible" coaxial antenna ...... N9CAP Economical Mobile HF Antenna - Modify a Radio Shack CB antenna for the HF bands ...... AA6NG 26 DXDA Awards and Countries - The latest update, thanks to Bob Reed WB2DIN ...... Staff 30 Dual-Band Vertical - This one's for the 160 and 1750 meter bands ...... WD4PLI 38 The L-O-N-G Long-Wire - What is it like to...
Topics: antenna, radio, amateur, ham, island, amateur radio, meter, mhz, ham radio, radio today, feedback...
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73 Magazine January 1991 (#364) High Precision Frequency Standard - Use your TV set as a laboratory standard ...... Johnson 9 Scrounger's Guide to Recycled Electronics - Discover a gold mine of inexpensive parts ...... W5FG 22 An HF/VHF/UHF Marker Generator - Get on frequency for less than $10 ...... K84ZGC 27 A Parallel Port I/O Board - Control your world! ...... VE6BGL 29 The Three-Terminal Regulator - Multiple uses in one package ...... N9RF 40 Rose Parade Mobile - A high-tech HF remote...
Topics: radio, amateur, antenna, mhz, frequency, ham, output, tor, amateur radio, radio today, ham radio,...
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73 Magazine November 1976 (#193) Cordless Iron Tips - when you're up against the Wahl ...... K9POX 26 Bicycle Mobile - cover feature ...... WB4SNC 30 Build a Simple "Lab" Scope - costs less than $70! ...... K8JWR 32 Get on Six with Surplus - the el cheapo RT-70 is a natural ...... WA5HLE 40 The Beam Saver - rotor memory system ...... W6YUY 46 Updated Universal Frequency Generator - extremely versatile test unit ...... K3EZ 50 Who, me? A Pioneer? - some fantastic frontiers are wide...
Topics: frequency, radio, power, mhz, output, voltage, input, amateur, packard, hewlett, power supply,...
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73 Magazine July 1976 (#189) Handy Dandy Soldering Iron Cooler Offer ...... WB4FDQ 18 Perfect CW - drive 'em crazy with the Keycoder I ...... WA9VGS 20 The Mini-Mite All-band QRP Rig - runs a mighty seven Watts ...... WA7SCB 30 A Fun Counter Project - an invaluable test instrument for under $50? ...... Plavcan 36 Build a FAX from Scratch - then get satellite pictures and other things ...... W4NK 44 Der Repeatermeister - repeater control, with ID ...... WA1UFE 58 Lightning and Thunder and Other...
Topics: output, power, circuit, kit, antenna, mhz, clock, pin, amateur, frequency, power supply, amateur...
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73 Magazine May 1992 (#380) Poor Ham's Dynamic Component Analyzer - Build your own Circuit detective ...... KA1MDA 8 Log Periodic Dipole Array for 2 Meters - Wideband performance in a small package ...... N2KLK 14 QRP Sidetone Companion - And part-time code practice oscillator ...... KI5AZ 18 The Copperback Beetle - A new type of "bug" ...... KI5AZ 20 Battery Watchdog - Keeps your battery up to snuff ...... WB0TCZ/7 26 Control Your Station by Computer - Hardware and software...
Topics: radio, amateur, antenna, mhz, frequency, repeater, call, khz, ham, amateur radio, call call, radio...
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73 Magazine July 1981 (#250) Dayton Dilemma '81 - which new gear do you buy? ...... KA1LR 22 The Fun-Ceiver - easy-to-build companion to February's QRP Fun-Mitter ...... WA0RBR 32 Review: The Kenwood TS-130s - a good rig done better ...... KA1LR 38 Review: The NCG-15 SSB/CW Monoband Transceiver - moving tale of mobile hamming ...... KA1LR 42 The Incredible Shrinking Antenna - give your vertical a top hat ...... W1GV/4 44 Review: The Micro Control Specialties Mark 3CR - a hassle-free repeater...
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Topics: radio, antenna, amateur, mhz, frequency, magazine, power, receiver, meter, amateur radio, power...
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73 Magazine November 1972 (#146) The Traveling Ham ...... G3ZCZ/W3 5 Solid State Power ...... W6EI 15 TTL SELCAL for RTTY ...... W9ZTK 20 An IC TRF Receiver ...... W6DNS 29 The Mark II Electronic Keyer ...... W6JJI Emergency Power for home QTH ...... WA8OIK 37 High Power Mobile ...... W9NTP 42 220 MHZ Front End Using FETS ...... K1CLL 45 Double Delta Antenna ...... W2EEY 52 FMP Review ...... Staff 57 A Simple Converter for Beginners ...... WA8OIK 59 The Third Hand... Tester ...... WB4MYL 65...
Topics: mhz, output, frequency, amateur, antenna, repeater, power, meter, circuit, input, amateur radio,...
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73 Magazine March 1975 (#174) Can a 7 foot 40m Antenna Work? - The small loop ...... W0PJG 33 The Secret of Antenna Gain - (Shhh -it's capture area!) ...... K2OAW 39 Twinlead Phased Array - Two elements on 40m - or any other band ...... WB2NQT 47 The Incredible Capacitive Antenna - Now: an 18" allband antenna ...... W0KGI 49 An 80m Phased Array - Switchable directivity ...... W2OZH 52 A Coax Amplifier for 450 MHz - 6 dB stacked collinear ...... W5GDQ 58 Invisible Antennas - Why ask for...
Topics: antenna, amateur, mhz, power, meter, radio, center, receiver, gain, magazine, amateur radio, power...
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73 Magazine October 1975 (#181) Build a Deluxe TTY Keyboard ...... K7YPG 22 Op Amps: Basic Primer ...... WB2NEL 33 Computers are Here - Are You Ready? ...... W2NSD/1 40 0-60 Hz Synthesizer ...... Calvin 50 A Satellite Fax System You Can Build ...... WB8DQT 60 Dispelling the Mystery of Regulated Supplies ...... W1HCI 69 Digital Logic - Down Through the Months ...... WB0DWV 87 Megger For Peanuts ...... Bach 102 Say, OM, Are You a Computer? ...... W2IAT 109 Digital Clock Time Bases ...... W2AOO...
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Topics: output, voltage, mhz, frequency, amateur, circuit, power, magazine, input, october, amateur radio,...
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73 Magazine July 1987 (#322) The National Championships - Finally, there's a contest where the "Little Gun" has a chance, where guile wins out over gigawatts ...... KE7C 30 The Two-Meter Transverter Project - Build this VMOS transverter and use all of your Kenwood TS-940's bells and whistles -on two meters! ...... W6YUY 32 Big Time Packet - With the help of a mainframe computer, KITE can control a packet station from his desk -or from around the world ...... K1TE 44 New Life on Two -...
Topics: amateur, radio, mhz, antenna, ham, power, frequency, amateur radio, ham radio, power supply, phone...
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73 Magazine January 1976 (#183) Clocks -Really Simplified! ...... WB2NEL 22 De-Strain Your Ham-M ...... K6BW 26 Hot Carbon ...... W1BNN 28 An Automatic Dialer for the Deluxe Mobile ...... WA4SAM 49 Zapping Dead Nicads to Life ...... K20AW 62 Plugboard Extender for Under $3.00 ...... W3WTO 65 Eyes For Your Shack ...... W0ACR 66 Build This Digital Capacity Meter ...... Chladek 70 The Computer QSO Machine ...... W1HAB 80 The Solder Master ...... K6JM 92 Stack Your ICs -And Pot 'Em ...... W4CUG 94...
Topics: circuit, mhz, frequency, input, kit, power, output, khz, mailable, voltage, power supply, amateur...
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73 Magazine October 1964 (#49) A Ham In the White House? ...... K3SUK 6 Compact Full Size 20 Meter Beam ..... W3PMV 10 160 Meter Transmitter ...... W4MLE 13 432 MHz Pre-Amp ...... K6MIO 18 The SJS Receiver, Part 2 ..... K5JKX 26 The P&H 2-150 ...... K6LOP 30 The 432'er Transmitter RF Section ...... K1CLL 32 The 432'er Modulator ...... KlCLL 44 The HP-23 Powers the Swan 100 ...... K6LOP 47 Modulated Calibration Oscillator ...... Ives 48 Ten'er to Six ...... K6GKU 51 Varactor Tripler to 432...
Topics: meter, noise, receiver, signal, oscillator, output, antenna, crystal, power, plate, noise figure,...
73 Magazine (Amateur Radio Today)
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73 Magazine October 1969 (#109) A Super-Gain Antenna for 40 Meters - Nine db on 40 meters might be called "super" ...... W4NVK 8 DX Corner - WTW reports and other DX jazz ...... K2AGZ 12 FET Chirper - Signal source for peaking converters for optimum signal/noise ...... K6QKL 20 The Inside Info on Alexander Graham - Or how the telephone really works ...... W2FEZ 24 Leaky Lines - Similar to "Grumbles," but by a licensed amateur, not a CB'er ...... K2AGZ 28 Scope Calibrator -...
Topics: signal, frequency, modulation, amateur, arrl, radio, antenna, modulating, power, receiver, amateur...
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73 Magazine December 1979 (#231) New Product: Swan's Astro 150 SSB Transceiver ...... WB8BTH 32 Low-Cost Receiver for Satellite TV - this modular design uses readily available technology ...... N6TX 38 A Simple 2m/10m Crossband Repeater System - work the world with an HT! ...... K9EID 44 Audio Booster for Mil-Surplus Receivers - a must for headphone haters ...... McClellan 50 Working with FETs - part II : experiments with gain and supply voltage ...... WA2SUT/NNN0ZVB 54 Build this $50...
Topics: mhz, frequency, amateur, antenna, output, circuit, power, audio, radio, amateur radio, power...
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73 Magazine November 1982 (#266) A Perfect "10" - Timer, counter, logic probe - 10 functions in all. That's the Multi-Board One and you can build it ...... WA2BHB 10 Remote Control Your IC-701 - Simpler than commercial controllers, this home-brew circuit nevertheless features push-button band changing and frequency selection scanning, and expanded coverage ...... N2GW 14 Automatic Beam Aimer - Here is the scoop on adding set-and-forget convenience to your rotator control. Works with...
Topics: antenna, output, circuit, mhz, voltage, audio, frequency, magazine, power, power supply, amateur...
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73 Magazine January 1978 (#208) The Go-first-Class Digital Tester - build this outstanding in-circuit logic monitor ...... W7BBX/4 24 The Unbeatable Base-Loaded Three-Element Rotary Vertical ...... W3KBM 22 Negative Numbers On A $9 Calculator ...... WB6IXT/7 32 Sideband Exposed! -the mysteries of SSB unveiled -why not understand it once and for all? ...... W2FEZ 34 IC Timer Review ...... W3HB 40 Forget Ohm's Law ...... Stanfield 46 Brew Up A Signal Generator ...... Staff 50 Reprogram Your...
Topics: output, frequency, mhz, power, kit, circuit, amateur, radio, receiver, input, power supply, amateur...
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73 Magazine April 1980 (#235) Sunspots... What Do They Mean? - your guess is as good as mine ...... G3WDI 32 More on Jammer Nabbing - hints on equipment and strategy ...... WB0CMC 36 Cheapy Scanner for the Memorizer - is $5 cheap enough for you? ...... WA2ORU 38 Back to School - we can still learn a thing or two about basic electricity ...... W6HDM 40 Moving Display ASCII Readout - works with UARTs, keyboards, and micros ...... W8VL 46 Lab-Quality Hi I Supply - part II ...... McClellan 54 A...
Topics: amateur, mhz, radio, antenna, kit, frequency, magazine, power, khz, amateur radio, power supply,...
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73 Magazine April 1979 (#223) A Speedy Spinner Mod - 5,000,000 Hz per minute ...... W2RZJ 40 A Variable Bandpass Active Filter - extremely simple design ...... W3KBM 42 What About an Active Antenna? - here's a look at one ...... W5JJ 44 Help for the Hearing-Impaired - don't miss another phone call ...... W4VRV 56 Try a Bi-Loop Antenna - gets you coming and going ...... W7CJB 58 Simple RTTY IDer - uses five ICs ...... G3MEJ 60 Tales of Speech Processing - including a practical design .........
Topics: amateur, mhz, antenna, radio, power, frequency, kit, arrl, tion, amateur radio, power supply, toll...
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73 Magazine July 1979 (#226) A Visit to Antenna Specialists - Wayne tours the test range ...... W2NSD/1 30 Secrets of Guyed Towers - put 'em up and keep 'em there ...... WB3BQO 34 Death-Defying PL Mod for the KDK 2015 - not for the squeamish ...... W8GQL 40 Feed-Horn Mounting Made Easy - solution to a pesky problem ...... WB8DQT 44 Antenna Tuning Joy Revisited - remember the Tektronix 190B? ...... W9CGI 48 Modern Solid-State Equipment Design: A Better Way - sorry, tube fans ...... W4RNL 52...
Topics: antenna, khz, mhz, amateur, meter, frequency, tower, radio, tion, amateur radio, power supply,...
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73 Magazine October 1995 (#421) The QRP Delight - A full-featured antenna tuner with built-in SWR meter ...... AD5X 10 DDS Dream VFO - Yes, you can build your own synthesizer! ...... KD1JV 14 Portable Solar Electric Power Generator - The sun is free for the using ...... K4SYU 20 Armstrong Updated - A high-performance, regenerative short-wave receiver ...... KC3ZQ 26 Link it All! - Why settle for operation on just two bands? ...... WB9YBM 32 Boring Beacons! - Making additional use of beacon...
Topics: radio, amateur, ham, mhz, frequency, antenna, repeater, receiver, hams, amateur radio, radio today,...
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73 Magazine December 1966 (#75) Transistor Power Supplies - Useful information on low-voltage DC supplies ...... W6GXN 10 The Sideband Escalator - Have you tried SSB speech clipping? ...... W6TAQ 16 A Ham Electronic Counter - Determine your frequency the modern way ...... K7UDL 20 The Novice Pair - Build a practical, modern novice station ...... W1JJL 28 A Lab-Type Power Supply - Regulated low-voltage output; PC construction ...... W6GXN 38 QRZed the YL - The frustrations of an YL's husband...
Topics: tlie, antenna, power, circuit, voltage, output, meter, frequency, ssb, ham, power supply, amateur...
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73 Magazine January 1980 (#232) NBVM: Dawn of an Era or Promotional Hype? - the performance and politics of Narrow Band Voice Modulation ...... N8RK 30 Frequency Counter Survival Course - use that gadget wisely ...... McClellan 36 DX with a Difference: the Utility Stations - when the ham bands get frustrating, give SWLing a try ...... WA3EOP 40 How to Write a RTTY Program - machine language is easier than you think ...... WA4FMZ 46 The Perfect Morse Machine - send and receive CW with a...
Topics: mhz, frequency, amateur, radio, antenna, audio, signal, power, meter, amateur radio, hewlett...
73 Magazine (Amateur Radio Today)
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73 Magazine February 1981 (#245) Winter Olympics Torch Run - a one-year perspective ...... KA2CNN/AAR2DE, KA2DBW 36 New Life for Old Klystrons - tips for microwave experimenters ...... WA4WDL 46 Add RTTY to Your Repeater - voice operation is preserved ...... WB4EMI 48 A Patch for the TS-120s - add phone patch compatibility ...... W5JJ 50 Successful Ham Classes - a guide for club organizers ...... WB1FOD 56 How FCC Rules Are Made - a labyrinthine tale ...... WD4DAZ 62 A $10 Phone Patch - CQ Ma...
Topics: mhz, frequency, antenna, amateur, power, repeater, magazine, radio, amateur radio, rtty, credit...
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73 Magazine November 1983 (#278) Construct the Callsign Power Supply - KAIQZ put together aesthetics and electronics to produce a power supply that gives you more than good regulation ...... KA1QZ 10 The Magical Audio Filter - A variable frequency notch filter plus a peaking circuit will do wonders for your reception. And this project will almost build itself ...... W6QIF 14 Keyboard Your Way to Happiness - If happiness is perfect Morse, then this project is pure heaven. Special construction...
Topics: amateur, mhz, radio, antenna, tor, frequency, ihe, output, circuit, morse, amateur radio, power...
73 Magazine (Amateur Radio Today)
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73 Magazine May 1981 (#248) Two-Meter Antennas: Facts and Fables - the truth about omnidirectional antennas on two ...... W1IS 12 The 440-MHz Curtain - hang this broadbanded two-bay collinear on your tower and get 22 dBi to play with ...... WA9OZC 22 The Plumber's Parabolic Mount - a first-class hydraulic system ...... WD4MRJ, KA4JYD 28 The History of Ham Radio - part XIV ...... W9CI 36 The Skeptic's Multiband Ground Plane - This antenna flies in the face of accepted theory. Do you think it...
Topics: antenna, amateur, radio, mhz, frequency, magazine, antennas, tion, ham, amateur radio, radio club,...
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73 Magazine April 1981 (#247) The History of Ham Radio - part XIII ...... W9CI 46 Build a Frequency Counter -That TALKS! - state-of-the-art for blind hams ...... WA0OHO 52 In the Stack - R/Cers, don't be grounded by control channel congestion! Put your ship on six! ...... WB3BQO 56 All the News that Fits - make your club newspaper a winner! ...... N9YL 60 My Infernal Tower - tales of aflying fiasco ...... KC7M 64 Apples: Five Bits or Eight - Tired of "Space Invaders"? Then turn your...
Topics: mhz, amateur, radio, frequency, antenna, ham, magazine, power, kit, amateur radio, power supply,...
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73 Magazine August 1979 (#227) You Can Watch Those Secret TV Channels - a complete MDS receiving system ...... K0JB, K0FQA 32 Simple Dual-Voltage Supply - power for many projects ...... W4VCZ 44 Bargain Zener Classifier - Novice project ...... WD8AAM 46 What the Hell is a Decibel? - 1/10 of a bel, of course ...... WA5EBB 48 Frosting for the FT-901DM - simple improvements for Yaesu's superb performer ...... K4TWJ 50 Mods for the Mark - desirable extras for your Wilson HT ...... K9EID 52 The...
Topics: antenna, amateur, mhz, radio, meter, power, voltage, frequency, output, amateur radio, power...
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73 Magazine June 1970 (#117) A Practical DDRR Antenna - Expensive, difficult-to-build mediocre antenna ...... W6WYQ 20 VFO Circuit - In case you are tired of crystal control ...... K0HVK 36 The Low-Noise Antenna - High noise you're looking for? ...... WB6JNI 39 Experimental Remote SWR Indicator - Experimental means we think it might work ...... W2EEY 41 The Little Wonder: Mark 11 - Proving again that almost anything will radiate ...... W5ZBC 46 CW Can Be Fun (With the Ord DK-1) - if you know...
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73 Magazine July 1980 (#238) The Rites of Spring - Dayton does it again ...... N1AUI, WB8BTH, KA1HY 30 One Step at a Time: Designing Your Own Ham Gear - part II ...... W4RNL 36 Top-Banding the DX-60B - put a classic rig on a classic band ...... WB1ASL 44 Forward into the Past! - a solid-state restoration project for a vintage BC receiver ...... W5JJ 48 ADDSCAN - now you can be two places at once ...... WB9FSC 52 Flat Cells are No Fun! - build a battery status monitor ...... WA3ENK 56 When Plus...
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73 Magazine February 1982 (#257) The Fun-Oscillator - a simple, goof-proof vfo for your QRP transmitter ...... WA0RBR 12 Build this Antennalyzer - you'll need a weekend ...... W1BG 16 Police Freqs for the TR-2400 - a sleepless night for the mod squad ...... N9AKX 26 Those Amazing Bobtails - the current-fed connection ...... W1XU 30 Shoot the Moon! - visual tracking for your EME array ...... W9CGI 34 CQ MARS de IC-2A - work new worlds ...... WD8JLW 46 The Father of FM - the tragic story of Major...
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73 Magazine April 1987 (#319) Dayton Digest - If you haven't been to the Dayton Hamvention, you haven't been to a hamfest ...... WA4BPI 32 QRP Antenna Farming - Work the world from a small lot with a few Watts ...... W0VM 36 The Cellular Phony Antenna - A two-meter mobile antenna with a twist ...... WA2AJQ 38 Weatherproofed Antennas - Stop ripping apart your antennas every year in the name of "maintenance" ...... KD5UJ 40 Tube Terror - "Before you can leave, you must find an...
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73 Magazine April 2000 (#473) Morse Code -The Once and Future Mode - Will you outlive it -or vice versa? ...... N1FN 10 The Long-Lost Art of Conversational CW - Banging away for long chats can be fun -if you know what to say ...... WF6P 18 Make Copies of This Article - Then drop them off at your local school(s) ...... W8DYF 20 The Finger - Here's a positive way to respond when someone gives it to you ...... K9AZG 22 Try a Sensor Keyer - For almost pressure -free CW ...... WB4TED 28 Vaya Can...
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73 Magazine October 1979 (#229) Extremely Low Frequency Radiation: Cause for Worry? - studies on ELF are inconclusive, but the battle is joined ...... WB2NEL 34 An LED Display for the HW-2036 - eliminates unwieldy thumbwheel switches ...... WA4BZP 36 It's a Wattmeter... It's an Swr Bridge.. It's Swattmeter! - a super home-brew project ...... K4LBY 42 The Double-Sawbuck QRM Annihilator - 3-IC circuit yields perfect CW ...... WA5QAP 50 Center Insulator for your Next Antenna - do it yourself with...
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73 Magazine March 1982 (#258) The Porta-Peater The Instant Communicator - quick and easy does it ...... WA2BHB, AC2A, WA2UNN 12 Amateur Television's Stripper - a home-brew star ...... VE3CYC 20 Polishing Kenwood's R-1000 - a gem in the rough ...... K9EUI 34 Peaking and Tweaking Surplus CB Boards - the untold story ...... WB0NPN/8 38 OSCAR Pathfinder - a colorful way to track the satellites ...... WB6NQK 46 Which TVRO Antenna Is Best? - Satellite Central, Part IV ...... Gibson 52 Home-Brew a...
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73 Magazine March 1978 (#210) The New, Improved "Best Keyer Yet" - updating MINI-MOS ...... K4JEM 22 The Powerful Grounded Antenna - thrives on poor soil ...... W0SII 26 How To Cut Costs On Power Supplies ...... W9HDA 28 You, Too, Can Go Digital ...... K2RB 32 Old Receivers - A Hidden Gold Mine - updating those '405 receivers ...... W6GXN 36 Old Rigs Can Live Again! ...... K41PV 40 Novices, Paddle Your Way To Happiness - super deluxe Novice keyer ...... W0OGX 44 How Many pF is That...
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73 Magazine December 1986 (#315) Make The Switch - Add WARC to your rig's bands witch in a few hours—but you'd better get a pair of tweezers ...... WB2JJX 26 A VOX In A Box - This is the SSBer's answer to memory keyers -a tape-loop CQer! ...... K1NYK 34 Split That Audio! - Listen in on one of contesting's best-kept secrets—and add precious points to your next multi-single effort ...... K1NYK 38 Nobody Died - Three courageous amateurs battle the contesting masses on six and two ...... KT2B...
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73 Magazine March 1999 (#462) The Pluck of the Irish - Was Wee Mac a leprechaun or a pirate-or both? ...... K9AZG 10 Transmitting Ferrite Loop for 80/160 - Thirty years of experimenting ...now it's your turn! ...... G2BZQ 14 Signals From the Ice: Now That's Really Cool! - Here's what happens when hams meet Alaska's Matanuska Glacier ...... KL7JR 20 Anti-Metric? - You already use it more than you think! ...... WD0GCK 23 Everyman's Guide to Active Filter Design - Now you know ...... KC3ZQ 26 Keys...
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73 Magazine February 1984 (#281) This Antenna Is Too Good To Be True - It's cheap. It works well on all bands. And it radiates a super signal ...... W4HDX 10 Construct the Minuteman Timer - As faithful as a grandfather cock. This timer tells when to ID - and when not to ...... KA8QBQ 14 The Secret of Remote Control - In Inside those miniature planes lie some sophisticated circuits ...... WB3BQO 18 Calculate Your FT-101 - Here 's how to treat your trusty FT-101 to a truly automatic digital...
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73 Magazine March 1977 (#198) Pitcairn Island ...... VR6TC 28 How Do You Use ICs? - Part VI ...... WA2SUT/NNN0ZVB 36 Low Voltage Power Supply ...... VE3CWY 38 QLF? Not With the Great Lakes Sideswiper! ...... W6VX 44 The Capacitor Comparator ...... WB4MYL 49 Logical Storage for Logic ...... Stanfield 50 CB Can Do Some Things Better ...... Norman 56 A New Breed of Voltage Regulators ...... WA7ABV 62 High-Quality Video Display ...... WABVNP 72 Save Time with a Micro OS ...... Ferguson, Ferguson 90...
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73 Magazine May 1977 (#200) Build the World's Simplest Keyer - uses 555 timers ...... Ring 46 Stop That Autostart - mods for the ST-6 circuit ...... WA5EVH 47 Predict the Weather! - a complete satellite receiver ...... WB8DQT 48 Learn A New Language - try CW ...... WB0KTH 52 The History of Ham Radio - part III ...... W9CI 54 The Oily Resistor Watteter - how to put 20 W into a 1 W resistor ...... WA1PDY 57 SSTV Slalom Game - you don't need a sports car ...... K4TWJ 58 Computer-Controlled...
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73 Magazine October 1991 (#373) The Sudden Receiver - A simple-to-build receiver for 160-20M ...... G3RJV 8 A 10M Sideband Transmitter - Add voice to your QRP station ...... NZ5G 14 Simple Gain Antenna for 903 MHz - Build it for under $25 ...... AD5X 27 Microprocessor Repeater Controller, Part I - Add versatility to your repeater system ...... WB3ESS 28 Low-Pass Antenna Tuner - Match your antenna while reducing harmonics with this unique design ...... KB4ZGC 46 Kenwood's TH-77A Dual-Band Walkie...
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73 Magazine December 1974 (#171) Making Nicads Behave ...... K2OAW 24 Zillions of Parts For Nothing ...... WB9MQY 36 C31 or Bust! ...... DK8SQ 39 Wind Indicator For Your Shack ...... W5ZG 41 Modified Weather Satellite ...... WB8DQT 48 A Logical Keyer? ...... K2QKO 53 The Perils of Novicehood ...... WA1SNG 58 Can FM Simplex Be Solved? ...... WA6CPP 65 Meters And Their Faces ...... W5IUR 70 Slow Scan Tape Secrets ...... K2ULR 73 Simple Probe Logic Check ...... WA3SWS 76 Public Service Band...
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73 Magazine September 1999 (#467) PIC Key, PIC Key - This simple CW keyer is a great way to learn about PICs ...... UY5DJ 10 Y2K Portable J-Pole - What emergency will you need to handle? ...... WA8TXT 16 Defogging Microstrips - An intro to microstripline filters ...... WA9PYH 19 Secrets of Transmission Lines - Part 2: Review of AC fundamentals ...... KE2QJ 26 Getting Your Foot in the Public Service Door - Here's how to get your club invoIved -and appreciated ...... KN4HL 30 Simple RF Signal...
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73 Magazine December 1969 (#111) Quick, Easy, Dependable Transistor Diode Checker - For those who like checkered diodes ...... W6ICC 6 Did Samuel Morse Really Invent the Telegraph? - Telegraph? What's that? ...... W2FEZ 10 Combination Dummy Load/Attenuator Network - Also doubles as a hot plate for your coffee warming ...... W2EEY 14 Tuned Filter Chokes - The Easy Way - Can your filter chokes carry a tune? ...... W2OLU 18 Hey OM - You've Got Carrier There - "Drop dead, you...
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73 Magazine August 1994 (#407) Stand-Alone DDS - The Kendraboard provides PC-free frequency control...... VA3BH 10 A Novel Dual-Band, Single Feedline, VHF/UHF Antenna - Good performance for less than a sawbuck ...... W7KOH 26 Design and Build a Dummy Antenna - A 40W, 50 ohm AF dummy load with a VSWR 1.3:1 at 500 MHz ...... VE5ZE 30 The Coleman (Mini)-Kilowatt - Extend your station's working range for next to nothing ...... WB2WIK/6 53 Mini-Joystick Scanning - Shift your tuning into high gear!...
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73 Magazine April 1988 (#331) Welcome, Newcomers! - Hams were meant to serve in the public interest ...... KA1HY 4 Ham Radio at Its Best - The IARN: A shining example of service ...... KA1PZV 11 San Salvador Earthquake - Volunteers, please step forward! ...... W9ELR 12 The BEARS Project - An innovative middle school radio program ...... KZ1Z 14 Universal Power Supply Module - Your power problems arc solved with this project ...... K1BQT 20 Emergency Packet - Definitive portable packet for...
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73 Magazine December 1972 (#147) AFSA IV SSTV Analyzer - Also works for RTTY ...... W0LMD 17 Single Conversion 2m FM - No 455 i-f needed - honest! ...... K1CLL 23 Miniature Tone Encoder - Fits inside the mike ...... WA9VGS 29 Tone Burst Decoder - For repeaters and such ...... W3JJU 33 Universal I-F Amplifier - Like for a 2m panoramic receiver ...... DJ1SK 38 Touch-Tone Connections - For repeaters ...... K3DSM 43 Simplest Audio IC Yet - Six parts and a battery! ...... W6YBP 49 Using Varactors -...
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73 Magazine October 1976 (#192) Build a Weird 2 Band Mobile Antenna - fantastic parking lot car locater ...... W6AAQ 20 Build a Counter for Your Receiver - updating receiver fun ...... WA3YGJ 28 How Do You Use ICs? - part II ...... WA2SUT/NNN0ZVB 38 QRP Fun on 40 and 80 - have a real ball with just 5 Watts! ...... K5JRN 44 The Hybrid Quad - has low windload, expense, hassle ...... WB8VCS 48 Frequency Detector for Your Counter - sounds alarm when set frequency occurs ...... W2AOO 50 Programmable...
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73 Magazine January 1982 (#256) Egad! A Nine-Tube Linear - results from the W7CSD test bed ...... W7CSD 12 Drama on Mt. McKinley - ice, snow, and amateur radio ...... W7KUF 18 The Simplex Autopatch - a telephone interface for everyone's two-meter rig! ...... WA7VZR 26 The Cheapskate - a checker for bargain diodes ...... K9QLL 30 Constant Current from a Voltage Regulator ...... WA4WDL 39 The Hesitator: A Windshield Wiper Control - a rainy day project ...... N4UH 40 TVRO Signal Source -...
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73 Magazine August 1972 (#143) Navassa - The intimate inside story of KC4DX! ...... W2NSD/l 4 Slow Scan Television - Introduction and general principles ...... W9NTP 16 Premodulation Speech Processor - Get a 1 to 2 S-unit increase in signal ...... W6AJZ 28 Two Buck Signal Generator - For 2m FM and stuff like that ...... WB4MYL 33 Transmitters, Then and Now - History ...... W2FEZ 35 Practical Amateur FM Repeaters - Next month impractical FM repeaters maybe? ...... K9STH 41 El Cheapo Test Probes...
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73 Magazine December 1990 (#363) Behold the BackPacket! - Go take a hike with packet radio ...... NW6H 9 Upgrade Your HD-4040 - KISS your Heath HD-4040 and keep AX.25 too! ...... N2BLI 19 The VOX Plus HT Accessory - Enjoy base station performance -with your HT! ...... WA2EBY 24 Pack Your Seabag, "Sparks" - Do you want to be a ship's Radio Officer? ...... N0MM 35 Audio Powered Tape Recorder Controller - Add convenience to your hamshack ......KE0UV 54 Ten-Tee's Hercules II Model 420 -...
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73 Magazine October 1972 (#145) Frequency Synthesizer for 2 Meter FM Part II - For any 2m rig ...... K2OAW 15 A Big New Voice in Chicago - September cover feature at last ...... W9NLT 25 Solid State 6 Meter Crystal - HET - VFO - Solid State - the Works ...... K1CLL 29 The FET Voltmeter As A Nano-Amperemeter - For checking FET's ...... ZL2AMJ 37 Time/Frequency Measuring System Part I - Station clock and frequency counter ...... K5OUS 39 Active Filter Design and Use : Part IV - Movie rights for...
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73 Magazine January 1983 (#268) Action Machine for 20 - Are home-brew rigs a lost art? No yet! Here's an SSB transceiver you can build ...... WB5IPM 12 An Alarming Procedure - This false-proof repeater emergency alert won't tie up expensive equipment ...... WA1LCF, K1FNX 24 Trimming the Fat from ATV - Why use 3 MHz when 500 kHz will do? WB6FHD proposes a way ...... WB6FHD 32 The Forgetful Autodialer Puzzle - Even Sherlock couldn't figure out how to make an autodialer that reprograms with no...
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73 Magazine May 1980 (#236) Home-Brew Rf Impedance Bridge - indispensable tool for antenna fans ...... WB6BIH 30 Rotary Beam for 10 or 15: the LB-2 - eliminates nasty matching problems ...... W6TYH 36 The 20-Meter Double Bobtail ...... W8HXR 44 Simple Switcher - a remote antenna switch with no control wires ...... WB5SFB 48 Taming the Monster Quad - a four-element blockbuster you can build ...... WA4JQS 50 For Cheapskates Only: A No-Frills Tilt-Over - requires a friend with a welding rig .........
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73 Magazine October 1982 (#265) The Splattometer - visual overmod warning ...... W1BG 10 Digital Basics - part II ...... K4IPV 20 Dissertation Upon Roast Pig - the ultimate in surplus? ...... N6TO 28 Got an Apple? Want RTTY? - try this hard-core interface ...... WB6FBN/4 34 The Pleasures and Perils of Crankup Towers - don't lose your head! ...... K4TWJ 40 The Incredible Antenna Mark 2 - a complete HF allbander in a very small space ...... KL7ISA 44 The Amazing Beam reader - point it with your...
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73 Magazine (Amateur Radio Today)
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73 Magazine (Holiday Issue 1976) (#195) Build This Inexpensive 400 Watt Amplifier - a pair of shoes never hurts W7SCD How Do You Use ICs? - part V WA2SUT/ NNN0ZVB Mobile Smokey Detector - 10.5 GHz:use it or lose it W1SNN Get a Kid Off the Streets - and in to ham radio WA1GFJ Add RIT to Your Transceiver - a must for CW operators Staff Coronaries for Burglars - with this cheapo car alarm WB60DS Power Supply - versatile WB4EHG DXpedition : Memories for a Lifetime - reflections of HKITL K3JJZ...
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73 Magazine June 1984 (#285) Easy Berardi Building - You can count on this simple frequency counter from Arizona ...... Berardi 10 Don't Grope in the Dark! - Let a simple card-file box be the brains of your own emergency lighting system ...... W7RXV 16 Flying High with Two - Here's how a hand-held makes for some ultralight Michigan madness ...... WB8DQT 20 Creason's Do-It DVM - The more Sam builds, the more smart people pay attention ...... K6EW 26 Meeting Ends Make - These ten tips will better...
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73 Magazine February 1978 (#209) Inexpensive EKG Encoder ...... WA3AJR 20 What Are They Showing On SSTV? - have you been missing something? ...... K4TWJ 24 Build A Better Phone Patch - hybrid -op amps-the works ...... Poirier 28 Drake TR-4CW Review ...... K4TWJ 30 Build A 3-1/2 Digit DVM ...... WA5VQK/5 40 Clean Up Your Tochtone Act ...... WA6THG 44 The Tempo 2020 -satisfaction tells all ...... WA2KOK 48 Repeater Procedure ...... WB4NAY 52 Tighten Up Your SB-102 ...... W2POG 53 QRP Hints .........
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73 Magazine April 1994 (#403) Motorcycle Mobile! - Take ham radio two-wheeling ...... KC6QJB 10 The 40 Meter Full-Wave Horizontal Loop - Take your signal to the treetops ...... NH6XK 14 The Big Kahuna - A 15' high, 160 meter Distributed Capacity Twisted Loop Antenna ...... WA6QBU 20 A Sensitive Bandspread SWL Receiver - Aaah, the nostalgic smell of dust burning off tubes! ...... XE2/KB6EPO 32 A 2 Meter Half-Kilowatt for $1 per Watt - Build this VHF amp using vacuum-tube technology! .........
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73 Magazine February 1980 (#233) CB-to-10 FM Continued - another way to join the fun on 29.6 ...... WB2EQG 42 Sunspot Predictions for 1980 - whither propagation? ...... WA3NKP 47 An End to Dials and Meters? - nope ... but discrete LEDs make an interesting substitute ...... Staff 50 The Paper, the Station, and the Man - a brief history of the New York Times radio stations ...... W3CFC 54 QRP from Canton Island - proving all things are possible ...... KH6GB 63 In Search of Power line Interference...
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73 Magazine (Amateur Radio Today)
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73 Magazine March 1980 (#234) Good-Bye to Autopatch Hassles - low-cost remedies to common problems ...... WB2LEI/4 30 Baudot-ASCII Converter Follow-Up - add a FIFO buffer for typing ease ...... VE4YD, VE4CM 34 CB to 10 - part XXII: more talk power for the TRC-11 ...... N4APN 38 The L With It - an alternative to the variable inductor ...... K4KI 40 Future Rig and Rigamarole - are you ready for faster-than-light propagation? ...... W6HDM 44 Gone But Not Forgotten - supermods for the HW-2021...
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73 Magazine October 1981 (#253) Contesting from VP5 - the other end of the pileup and how to get there ...... WB8BTH 12 In Profile: Ted Gamlin, A Contester ...... KA1D 18 Review: The Kenwood TS-530s HF Transceiver - sophisticated performance at a not-so-sophisticated price ...... KA1LR 26 Folded Unipole for 160 - Top-banders, take notice! Here's a top-loaded radiator with the government's seal of approval ...... WB6ZYK 28 Review: The VIZ WD-747 Digital Multirneter - low cost plus high...
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73 Magazine (Amateur Radio Today)
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73 Magazine June 1979 (#225) Add Digital Display for $50 - 100-Hz accuracy ...... K4IQJ 28 High-Performance Receiver Add-Ons - aren't ICs wonderful? ...... W5DA 32 A Solution to the Home-Brew Housing Shortage - building a box for your next project ...... W0IHI 38 How Do You Use ICs? - part XI ...... WA2SUT/NNN0ZVB 42 Customize Your HT144B - some nifty mods ...... W2KGV 46 Ultra-Simple CMOS Logic Probe - a single IC does it all ...... WB9PHM 50 "The Voice of Wolf Creek" - the KGCX...
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